Improvement in cranes



G. HUNZIKER.

Improvement in Cranes.

Patented July 16,1872.

wituwmz PATENT OFFICE.

GASPAR HUNZIKER, OF SUMMIT, MISSISSIPPI.

IMPROVEMENT IN CRANES.

Specification forming part of Letters Patent No. 129,282, dated July 16,1672- Specification describing a new and Improved Crane, invented byGASPAR HUNZIKER, of Summit, in the county of Pike and State ofMississippi.

My improvement consists in pivoting the horizontal crane-arm to avertical shaft below its plane by arms, or a frame extending below thepivot and terminating in a toothed segment, withwvhich a crank-shaft andpinion are connected.

The drawing is a side elevation of my improved crane.

A is. the vertical shaft, which is mounted in any suitable manner tosupport heavy weights from the top and turn on its axis in the manner ofordinary cranes, or it may be mounted on a portable platform, A, in atube, B, extending above and below said platform. B is the horizontalarm on which the weights are to be swung. It is pivoted to the shaft Aat O by the arms D, and extends nearly the same distance each way fromsaid shaft. At each end is a grooved roller, E, and the hoistingrope Fhangs from one end for engaging the weight, and passes over the otherend down to the drum G to be wound on and off for hoisting and lowering.This drum is mounted 011 arms projecting from shaft A, and turns withit. The arms D extend considerably below the pivot G, and have a toothedsegment,

H, attached to the lower ends, with. which segment a small toothedpinion, I, on a crankshaft, K, gears.

The loads are raised by the drum and cord, the crank-shaft K beinglocked fast. In this case the loads are balanced on the upper part ofthe shaft, or nearly so, by the extension of the arm B across the top ofthe shaft, and the extension of the rope from the end opposite theweight down to the drum, so that,the side draft on the vertical shaft,common to ordinary cranes, is mostly obviated. The horizontal arm B isshifted forward and back by the segment-pinion and crank-shaft to adjustit to the work in hand, and the end from which the weight is suspendedis raised or lowered, as circumstances may require.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- .The arms B, pivoted to the vertical shaft by thearms D in the manner described, the said arms D provided with thesegmental toothed wheel H, and the latter geared with the pinion andcrank-shaft, all substantially as specified.

. GASPAR HUNZIKER. Witnesses:

G. T. BUNCH, O. APPEL.

